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Edad y origen de la fluorita del yacimiento de la Nueva (Cabalango, Córdoba, Argentina) en base a geoquímica de isótopos radiogénicos (Nd y Sr)

Galindo Francisco, Mª del Carmen and Baldo, Edgardo G. and Pankhurst, R.J. and Casquet, César and Rapela, Carlos W. and Saavedra, Julio (1996) Edad y origen de la fluorita del yacimiento de la Nueva (Cabalango, Córdoba, Argentina) en base a geoquímica de isótopos radiogénicos (Nd y Sr). Geogaceta, 19 . pp. 67-69. ISSN 0213-683X

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Abstract

The fluorite mineralization from the La Nueva Mine, has a Sm-Nd age of 130 ± 19 Ma, and thus must
be related to the Lower Cretaceous late-Gondwanic extensional and magmatic event that affected the
Sierras Pampeanas Basement of Argentina. Hydrothermal fluids involved in the formation of fluorite
were probably derived by mixing of two fluids, an ascending high 87Sr/86Sr one, probably equilibrated
with basement metamorphics, as suggested by the very negative ENd(130) values, and a second, "descending",
with a low 87Sr/86Sr value.

Item Type:Article
Uncontrolled Keywords:Fluorite, Sm-Nd geochronology, Rb-Sr geochemistry, Sierras Pampeanas, Córdoba, Argentina
Subjects:Sciences > Geology > Geochemistry
ID Code:11553
Deposited On:16 Nov 2010 12:08
Last Modified:16 Nov 2010 12:08

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